Note: This lens is only compatible with the 20D, 30D, 40D, 50D, 60D, 7D and Digital Rebel series digital cameras. It is not compatible with the 1D or 5D series digital cameras nor 35mm film cameras.

DescriptionThis lens is easily the most popular wide angle lens we carry that is not made by Canon, and everyone who rents it raves about how sharp it is. In fact, one of our customers actually got a tatoo of it on his thigh! Okay we are making that up, but it is actually very popular. It's actually so popular we sometimes have a hard time keeping it in stock. Since its designed for a crop-sensor body it ends up being a 17-25mm lens, which is still plenty wide for most folks, and the f/2.8 aperture is very handy if you're shooting in low light. This lens will only mount on a 40D, 7D, etc...so full-frame shooters need not apply.

he integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocusing, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time., A rounded nine-blade diaphragm helps to produce an attractive out-of-focus quality., Fixed petal-shaped lens hood helps to reduce lens flare when working in strong lighting conditions and also offers some protection to the front element of the lens., The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations., The bayonet mount is constructed from brass for ensured accuracy and durability., This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.
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